Acetylene-gas machine.



I these objects by the machine described herein State of California,have NITED] STATEs ,PATENT Yormei?..

FREDERICK CAVE, OF LOS ANGELES, CALIFORNIA. f

ACETVYLENE-GAS IVICHINE.

TNO. 827,348.

Specification of Letters Patent.

Patented July 31, 1906. v

- Application filed January 22, 1906. Serial No= 297.3750.

To 1r/Z whom it may concern:

Be it knownthat I, FREDERICK F. CAVE, a citizen of the yUnited States,residing at Los Angeles, in the county of Los Angeles and usefulImprovements in Acetylene-.Gas Maclnnes, of which the following is aspecification. y

v My invention relates to that class of acetylene-gas machines in whichthe vcalcium carbldls'dropped into the water; and the object of myinvention is to produce asimple, compact, and c flicient machine inwhich the supply of carbld will be fed into the water as fast as the gasisneeded for use. I accomplish and `illustrated in the accompanyingdrawings,I in which* e o Figure lis a'central vertical section of mymachine. Fig. 2 is a section on line 2 1. Fig. 3 is a detail'` of thefeed-valve.

In the drawings, 4 is the usual water-tank,`

which in my machine Iv utilize as a generatorchamber. Vertically movablein the watertank is the gas-bell 5, which is provided with guide-pulleys6, which engage guide-bars 7,

' secured to the tank, thereby guiding the bell.

The carbid-chamber 8 has a downwardl -projecting delivery spout or tube9, whic jects throughthe centerof the top of the gas-bell and is securedto said bell. This spout forms the outer casing of the feedingmechanism. Within the lower endv of this spout and vertically movabletherein is the feed-valve 10, which consists of a hollow tube open atthe upper end andclosed at the lower f end and having elliptical openin1 1 in one side thereof. .To the lower end of t e tube is secured a stem12, and to the lower end thereof is secured a weight 13 by means ofchain 14, or the weight' could be directly attached thereto. Secured tothe/top of the gas-bell and projecting downwardly therefrom 'are yokes v15 and 16.. In these yokes are pivotally mounted the valve-operatinglevers 17 and 18, which have longitudinal slots 19 and 20\ intheirllower ends. One of these levers is on one side of the valve-stemand theother lever is on the other side of the valve-stem, and pins 21pass through the slots inlthese levers and through the valve-stern.- Tothe outer ends of these levers are secured chains 22 and 23, upon thelower ends of which are carried weights 24 and 25, which weights restupon supports 2'6 and 27 when the valve is lly opened, as shown in thedrawings. A

invented new and 1 2 of Fig.

pro-

guide and sealing tube 28 is secured to the top of the gas-bell.l AU-shaped valve-closin rod 2 9 is secured to the lower end of the'v Yvave-stem at one end and passes upwardly in guide-tube 28 and tothe upperend thereof handheld 30 when reiilling the machine.

I first close the valve by pulling on rod 29.

I then take cap 33 ofi' the carbid-chamber and fill the same withcarbid. I then replace cap 33 and then gradually open the valve by ledby pipe 34 out of the bell, passing downwardly and out near the bottomof the tank, where it is connected with a service-pipe 35, which leadsthe gasto its place of use. On vthe lower end. of this service-pipe is acock 36, through which any moisture may be drawn from. the pipe. A cock37 on the servicepipe is closed whenever it is desired to cut ofl" thegasfrom the place of use. To clean out the ash,`I have provided a pipe38, which is provided with gate 39, and water may be supplied to thewater-.tank through the pipe 40.` A stirrer-blade 41 has anoperating-handle 42, which projects upwardly through a seal-- .beobserved that as soon as weights 24 and 25 arel supported the furthermovement of the gas-bell downwardly will enable weight 13 to open thevalve to permit the carbid to flow into the water.

Cross-bars 44 and 45 connect the lower end of the supporting-yokestogether and form a y guidefor the lower end of the stem which "passesthrough them vand at the same time forms a stop to prevent the innerends of the levers from .movingl downwardly after the valve-tube openingas passed below the de liveryspout, as shown in Figs. 1 and 3.

As the opening in the valve-tube is prefer- Ioo ablyzelliptic'al, itwill be seen that. a very small quantity of carbid will first escape andthat as the valve is opened wider a .greater quantity will be permittedto iiow into the- IIO Zwater. This is particularly important, as if asingle light is being used the valve will only open suiiiciently topermit enough carbid to fall into the Water to generate suiiicient forthis single light; and if more lights are used more carbid drops intothe water, and at all times no more carbid is generated into gas than isrequired for use at that particular time. I have provided, however, asurplus of gasspace in the bell, so that it will furnish gas for thelights for some little time after a supply of carbid is exhausted Itwill be observed that byfeeding into the Water only the amount of carbidnecessaryT to produce the gas required for use at that particular timethe pressure on the gas is kept even and the lights do not flicker. Itwill also be observed that I have provided amachine of very compact formand simple construction.

Having described my invention, what I claim isl. In an acetylene-gasmachine, a Watertank; a gas-bell vertically movable therein; guides forsaid gas-bell a carbid-hopper upon the top of the bell and having adeliverytube projecting into the bell; a tubular valve having an opentop, a port in the side thereof and a closed bottom vertically movablewithin said delivery-tube; a weight connected to the bottom of saidvalve; levers carried by the bell and operatively connected to saidvalve; and Weights operatively connected to the outer ends of saidlevers.

2. In an acetylene-gas machine, a watertank; a gas-bell verticallymovable therein; guides for said gas-bell; a carbid-hopper upon the topof the bell and having a deliverytube projecting into the bell; a valveon said delivery-tube comprising a tube open at the upper end andvertically movable in said d elivery-spout, said tubeb eng closed at itslower end and having an opening m one side thereof a stem secured to thelower end of said tube; supports secured to the top of the gas-bell andprojecting downwardly therefrom one on each side of said delivery-spout;levers having slots in the ends thereof pivotally secured to saidsupports; a pin passing through said slots and through the stem securedto said valve; weights secured to the outer end of said levers; a weightsecured to said valvestem; and a stop to hold the inner ends of saidlevers against too great downward movement.

In witness that I claim the foregoing I have hereunto subscribedl myname this 13th day of January, 1906.

FREDERICK I). CAVE.

